Zontes ZT310T-M, Руководство по обслуживанию

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Fault diagnosis and elimination of EFI parts
Caution:
●Once the EFI components are disassembled, the EFI system needs to be reset. For details, see the service
information in this chapter.
●Fuel pumps, three -in-one sensors, stepping motors, ECUs, etc. are precision parts, such as unauthorized
disassembly may cause damage, and it is not within the scope of the three guarantees for human reasons.
●After disassembling the throttle valve body, apply lint -free cloth or textured paper to seal the air filter outlet and intake
manifold to prevent foreign matter from entering.
1. Dump switch
Fuel cut off
during driving
Can ride
normally
Short-circuit the
black-brown, white-
yellow wires
connected to the
dump switch
Can't ride
normally
Check ECU, fuel
pump, throttle
valve body, etc.
Replace the
dump switch
2. OBD port
The main cable has its own OBD interface, and the
location is shown in the previous section to read the
fault code through the diagnostic Speedometer. Use
the diagnostic tool through the diagnostic interface to
read historical fault codes, current fault codes, clear
fault codes and read ECU status.
The picture above shows the cable end connector
No. 1 5 6 7 14 16
Colo
r
Blue/y
ellow
gree
n
yellow/
white
brown/
white
green/
black
Red
3. Fuel pump
Caution:
●The fuel pump is a precision component that needs
to be assembled in a dust-free workshop and requires
rigorous testing, so it is forbidden to disassemble it by
yourself.
●The engine of this vehicle is designed with a high
compression ratio. It is recommended to add 95# and
above unleaded gasoline for a long time. In order to
extend the service life of the vehicle, please be sure to
go to a regular gas station to refuel.
●It is forbidden to run the fuel pump in dry state or in
water, otherwise its service life will be shortened, and it
will be directly damaged in severe cases. The positive
and negative wires of the fuel pump cannot be
connected in reverse. It is forbidden to disassemble
the fuel inlet filter, which may cause foreign matter to
enter the fuel pump or block the fuel injector.
●The disassembly of the fuel pump or high -pressure
fuel pipe should be carried out in a well-ventilated,
dust-free or dust-less environment; dangerous
operations such as fireworks or mobile phones should
be strictly prohibited in the disassembly site.
When it is difficult to start the engine or start without
dust; the engine is not working well, the operation is
unstable, etc.; the fuel injector does not inject fuel; the
engine is running weak and the acceleration
performance is deteriorated. It is necessary to check
whether the fuel pump is abnormal.
Refer to the steps of "Maintenance-Fuel Pipe-
Replacement of High-pressure Fuel Pipe" in this
manual to remove the surrounding bottom plate and
high-pressure fuel pipe. Refer to the section
"Maintenance-Fuel Pipe-Fuel Pump" to measure fuel
pressure with a fuel pressure gauge, or use a simple
test method to test whether the fuel pump is normal.
If the fuel pump needs to be removed from the